Radiotelephone Communications - Latest Activist Disclosures

This table shows recent activist investor (Schedule 13D) filings made in this industry. Any investor or hedge fund that makes an investment with the intention of influencing management is considered an activist investor and must file a 13D.

Date Form Target Company Investor Shares Ownership
(Percent)		 Ownership Change
(Percent)
2025-09-04 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-08-22 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-08-13 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-08-12 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 636,411,404 56.50 -1.84
2025-08-08 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 50,861,065 4.52 -20.36
2025-08-05 13D/A AD / Array Digital Infrastructure, Inc. Telephone & Data Systems Inc /de/ 70,788,703 82.00
2025-06-20 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 648,359,244 57.10 -3.27
2025-06-20 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 63,861,065 5.62 -25.19
2025-06-12 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 670,278,284 59.00 0.00
2025-03-17 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 41.88 1.15
2025-03-14 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 670,278,284 58.70 0.00
2025-03-12 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 69,666,200 41.14 0.62
2025-02-14 13D/A VOD / Vodafone Group Public Limited Company - Depositary Receipt (Common Stock) Emirates Telecommunications Group Co PJSC 3,944,743,685 15.62 0.00
2024-10-11 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 69,236,111 40.37 0.00
2024-09-26 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 670,278,284 57.40
2024-09-09 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 69,236,111 40.42 0.00
2024-08-26 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 69,236,111 40.42 38.56
2024-08-05 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.17 0.00
2024-07-22 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.18 0.00
2024-07-03 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.18 0.00
2024-07-02 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 57.00
2024-07-02 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 85,361,065 7.26 0.00
2024-06-13 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 57.20
2024-06-11 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 57.20
2024-06-11 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 85,361,065 7.26 -7.31
2024-05-23 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.19 0.00
2024-03-13 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 57.60
2024-01-17 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.14
2024-01-02 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 57.60
2023-12-26 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 92,089,766 7.64 112.49
2023-11-30 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 56.20
2023-11-08 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 48,442,868 28.20
2023-10-02 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 46,608,240 27.13
2023-09-20 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 55.20
2023-09-14 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 55.30
2023-08-24 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 44,763,173 26.06
2023-07-24 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 42,820,472 24.95
2023-06-06 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 43,338,209 3.61 8.97
2023-06-02 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 41,821,641 24.42
2023-05-25 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 41,406,070 24.18
2023-05-12 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 39,458,894 23.04
2023-05-11 13D/A VOD / Vodafone Group Public Limited Company - Depositary Receipt (Common Stock) Emirates Telecommunications Group Co PJSC 3,944,743,685 14.61 0.00
2023-04-26 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 37,685,952 22.00
2023-04-24 13D VOD / Vodafone Group Public Limited Company - Depositary Receipt (Common Stock) Emirates Telecommunications Group Co PJSC 3,944,743,685 14.61 22.06
2023-04-04 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 53.90
2023-03-28 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 35,923,526 21.00
2023-02-24 13D TIGO / Millicom International Cellular S.A. Atlas Investissement 34,173,526 20.00
2023-02-22 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 53.30
2022-06-29 13D/A SPOK / Spok Holdings, Inc. Acacia Research Corp 966,883 -23.38
2022-04-13 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 39,771,809 3.18 -34.72